1.添加更为友好的提示

2.减少切换lte only的时间（之前10s现在8s）
3.优化代码结构

app/src/main/AndroidManifest.xml

@@ -17,6 +17,8 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <service android:name=".DaemonService" />
     </application>
 
 </manifest>

app/src/main/java/com/jrsen/lte/DaemonService.java

@@ -0,0 +1,111 @@
+package com.jrsen.lte;
+
+import android.app.Notification;
+import android.app.Service;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.IBinder;
+import android.widget.Toast;
+
+import com.jrsen.ltepatch.LteDaemon;
+
+import java.io.File;
+import java.io.OutputStream;
+import java.util.StringTokenizer;
+
+/**
+ * Created by jrsen on 16-9-7.
+ */
+public final class DaemonService extends Service {
+
+    @Override
+    public void onCreate() {
+        if (isRooted()) {
+            tryAutoSetPreferredNetwork();
+        } else {
+            tryManualSetPreferredNetwork();
+            Toast.makeText(this, "没有su权限,请手动切换到lte网络.", Toast.LENGTH_LONG).show();
+            stopSelf();
+        }
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    private void tryManualSetPreferredNetwork() {
+        try {
+            Intent intent = new Intent();
+            ComponentName componentName = new ComponentName("com.android.settings", "com.android.settings.RadioInfo");
+            intent.setComponent(componentName);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            startActivity(intent);
+        } catch (Exception ignore) {
+        }
+    }
+
+    private void tryAutoSetPreferredNetwork() {
+        new AsyncTask<Void, Void, Integer>() {
+
+            @Override
+            protected void onPreExecute() {
+                startForeground(1, new Notification());
+                Toast.makeText(DaemonService.this, "正在检测是否支持lte网络...", Toast.LENGTH_LONG).show();
+            }
+
+            @Override
+            protected Integer doInBackground(Void... params) {
+                try {
+                    final String[] COMMANDS = {
+                            "export CLASSPATH=" + getPackageCodePath(),
+                            "app_process /system/bin " + LteDaemon.class.getName()
+                    };
+                    Runtime runtime = Runtime.getRuntime();
+                    Process su = runtime.exec("su");
+                    OutputStream os = su.getOutputStream();
+                    for (String command : COMMANDS) {
+                        os.write((command + "\n").getBytes());
+                    }
+                    os.flush();
+                    os.close();
+                    return su.waitFor();
+                } catch (Exception ignore) {
+                }
+                return LteDaemon.ERROR_UNKNOW;
+            }
+
+            @Override
+            protected void onPostExecute(Integer result) {
+                if (result == 0) {
+                    Toast.makeText(DaemonService.this, "已成功切换到lte网络！", Toast.LENGTH_LONG).show();
+                } else if (result == LteDaemon.ERROR_UNKNOW) {
+                    tryManualSetPreferredNetwork();
+                    Toast.makeText(DaemonService.this, "自动切换失败，请手动切换到lte网络。", Toast.LENGTH_LONG).show();
+                } else if (result == LteDaemon.ERROR_NO_LTE) {
+                    tryManualSetPreferredNetwork();
+                    Toast.makeText(DaemonService.this, "目前位置可能不支持lte网络，请尝试手动切换到lte网络。", Toast.LENGTH_LONG).show();
+                }
+                stopForeground(true);
+                stopSelf();
+            }
+        }.execute();
+    }
+
+    public static boolean isRooted() {
+        String path = System.getenv("PATH");//获取环境变量,eg:/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin:/vendor/bin
+        if (path == null) {
+            return false;
+        }
+        StringTokenizer stok = new StringTokenizer(path, ":");
+        while (stok.hasMoreTokens()) {
+            File su = new File(stok.nextToken(), "su");
+            if (su.exists()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}

app/src/main/java/com/jrsen/lte/SettingsActivity.java

@@ -2,65 +2,16 @@
 
 
 import android.app.Activity;
-import android.content.ComponentName;
 import android.content.Intent;
 import android.os.Bundle;
-import android.widget.Toast;
 
-import com.jrsen.ltepatch.LteDaemon;
-
-import java.io.BufferedWriter;
-import java.io.File;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.util.StringTokenizer;
-
-public class SettingsActivity extends Activity {
+public final class SettingsActivity extends Activity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (isRooted()) {
-            try {
-                final String[] COMMANDS = {
-                        "export CLASSPATH=" + getPackageCodePath(),
-                        "app_process /system/bin " + LteDaemon.class.getName()
-                };
-                Runtime runtime = Runtime.getRuntime();
-                Process su = runtime.exec("su");
-                OutputStream os = su.getOutputStream();
-                BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os));
-                for (String command : COMMANDS) {
-                    bw.write(command + "\n");
-                    bw.flush();
-                }
-                bw.close();
-            } catch (IOException ignore) {
-            }
-            Toast.makeText(this, "自动切换到lte网络", Toast.LENGTH_LONG).show();
-        } else {
-            Intent intent = new Intent();
-            ComponentName componentName = new ComponentName("com.android.settings", "com.android.settings.RadioInfo");
-            intent.setComponent(componentName);
-            startActivity(intent);
-            Toast.makeText(this, "手动切换到lte网络", Toast.LENGTH_LONG).show();
-        }
+        startService(new Intent(this, DaemonService.class));
         finish();
     }
 
-    public static boolean isRooted() {
-        String path = System.getenv("PATH");//获取环境变量,eg:/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin:/vendor/bin
-        if (path == null) {
-            return false;
-        }
-        StringTokenizer stok = new StringTokenizer(path, ":");
-        while (stok.hasMoreTokens()) {
-            File su = new File(stok.nextToken(), "su");
-            if (su.exists()) {
-                return true;
-            }
-        }
-        return false;
-    }
 }

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.2'
+        classpath 'com.android.tools.build:gradle:2.1.3'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle.properties

@@ -12,6 +12,6 @@
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
-#Fri Jun 24 14:16:05 CST 2016
+#Wed Sep 07 15:04:20 CST 2016
 systemProp.http.proxyHost=127.0.0.1
-systemProp.http.proxyPort=1080
+systemProp.http.proxyPort=8118

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Dec 28 10:00:20 PST 2015
+#Wed Sep 07 15:14:51 CST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip

ltepatch/build.gradle

@@ -21,6 +21,5 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.4.0'
     compile project(':reflect-lib')
 }

ltepatch/src/main/java/com/jrsen/ltepatch/ITelephony_L.java

@@ -16,6 +16,8 @@ public final class ITelephony_L {
     @ClassParams({int.class})
     public static Method<Boolean> setPreferredNetworkType;
 
+    public static Method<Integer> getNetworkType;
+
     static {
         Reflection.init("com.android.internal.telephony.ITelephony", ITelephony_L.class);
     }